grading and shielding ring的意思|示意
美 / /
英 / /
均压屏蔽环
grading and shielding ring的网络常见释义
均压屏蔽环 ... 活塞压环螺钉 piston junk ring bolt 内压环 innerpressurering 均压屏蔽环 grading and shielding ring ...